Planer-chuck.



No. 664,686. VPatented nec. 25, |900. .1. suEss.

v PLANER CHUCK.

(Appuman and .my 2s, 19nd.)

(No ladet.)

UNITED STATES PATENT OFFICE.

JACOB SUESS, OF CHICAGO, ILLINOIS.

PLAN ER-CH UCK.

SPECIFICATION forming pm of Letters Patent No. 664,688, atea December 25', 1906.t

Application filed July 23,1900. b'erial No. 24,491. (No model.)

To all wiz/0711, t 'may concern/.-

Be it known that I, JACOB SUESS, a citizen of the United States, and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Planer-Chucks, of which the following is a specification, and which are illustrated in the accompanying drawings, forming a part thereof.

This invention relates to devices for use in connection with metal-planers and adapted to secure the work to be operated upon to the platen of the planer; and its object is to increase the efficiency and general utility of devices of this character.

The invention consists in the construction hereinafter described and which isillustrated in the accompanying drawings, in which- Figure 1 shows a cross-section of a planerbed with a piece of work resting thereupon, a pairof the improved clutches being shown in side elevation. Fig. 2 isadetail plan View of the same. Fig. 3 is a detail sectional View of the platen and side elevation of one of the clutches, showing a modified form of construction. Fig. 4 is a bottom plan view of the clutch shown in Fig. 3; and Figs. 5 and 6 are respectively a side elevation and plan view of a further modification of the clutch, portions of the platen and work being shown in cross-section and plan.

At 10 there is represented a portion of an ordinary platen of a metal-planing machine, the same being provided with the usual T- grooves 11 11, within which are fitted the T- bolts 12 12, by means of which the clutches are secured in any position to which they may be adjusted. f

At 18 is shown a piece of work secured to the platen.

The improved clutch comprises a screwhead 13, having a slotted body portion 14, through which the threaded end of the securing-bolt 12 may project, a threaded pressurebolt l5, projecting forwardly from the screwhead 13, and a tilting dog 16, having a sharp edge 17 for biting into the metal to be secured, a dat bottom 19, upon which it may rest upon the platen, and a vertical rearward face 20, against which the nose 23 of the pressure-bolt 15 may bear. The rearward face 2O of the dog is provided with a shallow recess to receive the nose 23 of the pressurebolt, and the point of application of the latter to the dog is'at a greater elevation than the sharp edge 17, which engages the work, so that as the pressure-bolt is turned forwardly by the application of a Wrench toits squared head 22,the dog 16 tends to tilt upon the forward edge 21 of itsflattened bottom 19 as a fulcrum, thereby not only forcing the piece of Work 18 against the opposing clutch, but also bearing it down upon the bed of the platen.

The head 22 of the pressure-bolt 15 is located in front of the screw head 13 in order that it may not cut off any of the slot in the secured and the pressure-bolt brought to bear upon it.

If desired, the dog may be connected with the screw-head, so as to be adjusted therewith. To this end the screw-head is provided with forwardly-projecting lugs 24, recessed across their lower faces to receive trunnions 25, formed upon the .dog 16 and at its heel, as shown in Figs. 3 and 4. The recesses for these trunnions should be sufciently large to admit of some play, so that the dog may be tilted by the pressure of the screw-bolt 15. Should the dog be made of less Width than the throat of the T-slols 11 l1, it is preferably provided with laterally-projecting feet 26 of sufficient length to span these slots, so that the clutch may, if desired, be longitudinally disposed upon the platen.

A further modification is shown in Figs. 5 and 6, in which there is shown a dog 27 without the flat bottom and provided with trunnions 28, engaging recesses in the under faces of forwardly-projecting lugs 24 of the screwhead and forming the fulcrum upon which the dog tilts when pressure is applied to force it against the work.

IOO

In use when the detached dog of Figs. l and 2 is used it is first placed in proximity to the Work to be secured. adjusted to position so that the nose 23 of the screw-bolt 15 will bear against the rearward face 20 of the dog, the bolt being turned back, and the head is now secured by means of the nut 29, applied to the bolt 12. The bolt l5 now being turned forward, the edge 17 of the dog bites into the work and securely binds it to the platen.

If either of the forms of construction shown in Figs. 3 to 6 is followed, the dog is applied to the Work as the screw-head is adjusted, and after the nut 29 has been turned down the bolt 15 is advanced so that the dog grips the work.

I claim as my invention-- l. In a clutch for metal-planers, in combination, a screw-head adapted to be secured to the planer-platen, a pressure-bolt projecting forwardly from the screw-head, and a tilting 'dog having a sharp `edge for engaging the work to be secured and a rearward face adapted to receive the pressure of the screw-bolt at a point out of line with the sharp edge, whereby the pressure of the bolt tends to tilt the dog.

2. In a clutch for metal-planers, in combination, a screw-head adapted to be secured to the planer-platen, a pressure-bolt projecting forwardly from the screw-head, and a tilting 'dog having aiattened bottom and a sharp edge for engaging the work to be secured and a rearward face adapted to receive the pres- The screw-head is now esi-,ess

sureof the screw-bolt at a point more remote from the flattened bottom than is the sharp edge.

3. In a clutch for metal-planers, in combination, a screw-head adapted to be secured to the planer-platen, a pressure-bolt projecting forwardly Yfrom the screw-head and having a polygonal head at its outer end, and a tilting dog having a sharp edge for engaging the work to be secured an'd a rearward face adapted to receive the pressure of the screwbolt.

4. In a clutch for metal-planers, in combination, a screw-head having its body longitudinally slotted to adjustably receive an attaching-bolt whereby ir may be secured tothe planer-platen, a pressure-bolt projecting forwardly from 'the screw-head, and -a 'tilting dog having a sharp edge for Vengaging the work to ybe secu red and a iattened rearward face adapted Ato receive the pressure of 'the screw-bolt.

5. In a clutch for metal-planets, in combination, a screw-head adapted to be secured to the planer-platen, a pressure-bolt projecting forwardly from thes'crew-head, a tilting dog having a sharp edge for engagingthe 'work LOUIS K. GILLsoN, E. M. KLATCH'ER. 

